Bradford White 238-16152-00F User manual

Brand: Bradford White

Model: 238-16152-00F

Category: Water heaters & boilers

Type: User manual

238

16152

00F REV 12/03

COMMERCIAL ELECTRIC WATER HEATER

La version espanola de estas instrucciones se puede obtener al escribirle a la

fábrica cuyo nombre aparece in la placa de especificaciones.

A Spanish language version of these instructions is available by contacting the

manufacturer listed on the rating plate.

THE WARRANTY ON THIS WATER HEATER IS IN EFFECT ONLY WHEN

THE WATER HEATER IS INSTALLED AND OPERATED IN ACCORDANCE

WITH LOCAL CODES AND THESE INSTRUCTIONS. THE

MANUFACTURER OF THIS HEATER WILL NOT BE LIABLE FOR ANY

DAMAGE RESULTING FROM FAILURE TO COMPLY WITH THESE

INSTRUCTIONS. READ THESE INSTRUCTIONS THOROUGHLY BEFORE

STARTING.

For safety, convenience, and best performance, we recommend

this water heater be installed and serviced by a plumbing

professional.

INSTALLATION & OPERATING

INSTRUCTION MANUAL

INTERNET VERSION FOR REFERENCE ONLY

CONGRATULATIONS!

You have just purchased one of the finest water heaters

on the market today!

This installation, operation and instruction manual will

explain in detail the installation and maintenance of your

new Commercial Electric Water Heater. We at Bradford

White strongly recommend that you contact a plumbing

professional for the installation of this water heater.

We require that you carefully read this manual, as well as

the enclosed warranty, and refer to it when questions

arise. If you have any specific questions concerning your

warranty, please consult the plumbing professional from

whom your water heater was purchased. For your

records we recommend that you write the model, serial

number and installation date of your water heater in the

maintenance section in the back of this manual.

This manual should be kept with the water heater.

At Bradford White we’re committed to providing you with

the finest water heater made.

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TABLE OF CONTENTS

General Information................................................................... 4

Installation.................................................................................... 5

Locating The Water Heater .................................................... 5

Water Connections.................................................................. 8

Electrical Connections............................................................ 14

Amperage Chart ....................................................................... 15

GPH Recovery Capacities...................................................... 15

General Operation...................................................................... 16

Thermostat Adjustment........................................................... 17

Maintenance................................................................................ 19

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GENERAL INFORMATION

The design of this electric water has been listed with Underwriters’

Laboratories, Inc. (UL) as complying with UL standard UL1453.

This water heater must be installed in accordance with local codes. In the

absence of local codes, install this water heater in accordance with the N.E.C.

Reference Book (latest edition).

The warranty for this water heater is in effect only when the water heater is

installed, adjusted and operated in accordance with these Installation and

Operating Instructions. The manufacturer will not be held liable for damage

resulting from alteration and/or failure to comply with these instructions.

This water heater has been designed and listed for the purpose of heating

potable water. The installation and use of this water heater for any purpose

other than the heating of potable water may cause damage to the water heater

and create a hazardous condition and nullify the warranty.

Do not use this appliance if any part has been under water. Immediately call a

qualified service technician to inspect the appliance and to replace any part of

the control system and/or any gas control, which has been under water.

Depending upon individual circumstances, it may be necessary to replace the

entire water heater.

Make sure that the rating plate on the water heater is referenced for certainty

that the correct voltage is being supplied to the water heater.

CAUTION

Incorrect operation of this appliance may create a hazard to life and

property and will nullify the water.

DANGER

Do not store or use gasoline or other flammable, combustible or

corrosive vapors and liquids in the vicinity of this or any other

appliance.

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General Information continued-

A sacrificial anode(s) is used to extend tank life. Removal of any anode, for

any reason, will nullify the warranty. In areas where water is unusually active,

an odor may occur at the hot water faucet due to a reaction between the

sacrificial anode and impurities in the water. If this should happen, an

alternative anode(s) may be purchased from the supplier that installed this

water heater. This will minimize the odor while protecting the tank.

Additionally, the water heater should be flushed with appropriate dissolvers to

eliminate any bacteria.

IMPORTANT

Before proceeding, please inspect the water heater and its components for

possible damage. DO NOT install any damaged components. If damage is

evident, please contact the supplier where the water heater was purchased or

the manufacturer listed on the rating plate for replacement parts.

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INSTALLATION

Locating The Water Heater

This water heater must NOT be installed in any location where gasoline

or flammable vapors are likely to be present, unless the installation is

such to eliminate the ignition of gasoline or flammable vapors.

The location for the installation of this water heater is of utmost importance.

Before installing this water heater, consult the installation section of these

instructions. After reading these installation and operating instructions, select

a location for the water heater where the floor is level and is easily accessible

to a power supply and water connections. It is recommended that the water

heater be located near the center of greatest hot water usage to prevent heat

loss through the pipes. DO NOT locate the water heater where water

lines could be subjected to freezing temperatures. Locate the water

heater so that access panels and drain valves are accessible.

Water heater corrosion and component failure can be caused by the heating

and breakdown of airborne chemical vapors. Examples of some typical

compounds that are potentially corrosive are: spray can propellants, cleaning

solvents, refrigerator and air conditioning refrigerants, swimming pool

chemicals, calcium or sodium chloride, waxes and process chemicals. These

materials are corrosive at very low concentration levels with little or no odor to

reveal their presence. NOTE: DAMAGE TO THE WATER HEATER CAUSED

BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY THE

WARRANTY. DO NOT OPERATE THE WATER HEATER IF EXPOSURE

HAS OR WILL OCCUR. DO NOT STORE ANY POTENTIALLY CORROSIVE

COMPOUNDS IN THE VICINITY OF THE WATER HEATER.

Locating The Water Heater continued-

This water heater must be located in an area where leakage of the tank or

water line connections and the combination temperature and pressure relief

WARNING

Water heaters are heat-producing appliances. To avoid damage or injury,

there must be no materials stored against the water heater and proper care

must be taken to avoid unnecessary contact (especially by children) with the

water heater. UNDER NO CIRCUMSTANCES SHALL FLAMMABLE

MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR

STORED IN THE VICINITY OF THIS WATER HEATER OR ANY LOCATION

FROM WHICH FUMES COULD REACH THE WATER HEATER.

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valve will not result in damage to the area adjacent to the water heater or to

lower floors of the structure. When such locations cannot be avoided, a

suitable drain pan must be installed under the water heater. The drain pan

must be no greater than 1 1/2 in. (3.8 cm) deep and have a minimum length

and width of at least 4 in. (10.2 cm) measured from the jacket of the water

heater. The drain pan, as described above, can be purchased from your

plumbing professional. The drain pan must be piped to an adequate drain.

The piping must be pitched for proper drainage.

Water Connections

NOTE: BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE

MAIN WATER SUPPLY VALVE.

After shutting the main water supply valve, open a faucet to relieve the water

line pressure to prevent any water from leaking out of the pipes while making

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the water connections to the water heater. After the pressure has been

relieved, close the faucet. The cold water inlet line connects to the inlet nipple

at the base of the water heater. The hot water outlet line connects to the

nipple on top of the water heater. The fittings at the cold water inlet and hot

water outlet are dielectric waterway fittings with tapered male threads. Make

the proper plumbing connections between the water heater and the plumbing

system in the structure. Install a shut-off valve in the cold water supply line.

If this water heater is installed in a closed water supply system, such as one

having a back-flow preventer in the cold water supply, provisions shall be made

to control thermal expansion. DO NOT operate this water heater in a closed

system without provisions for controlling thermal expansion. Your water

supplier or local plumbing inspector should be contacted on how to control this

situation.

After installation of the water lines, open the main water supply valve and fill

the water heater. While the water heater is filling, open several hot water

faucets to allow air to escape from the water system. After a steady stream of

water flows from the faucets, close them and check all water connections for

possible leaks. NEVER OPERATE THE WATER HEATER WITHOUT FIRST

BEING CERTAIN IT IS FILLED WITH WATER.

Water Connections continued-

CAUTION

If sweat fittings are to be used, DO NOT apply heat to the nipples on top of

the water heater. Sweat the tubing to the adapter before fitting the adapter

to the water connections. It is imperative that heat is not applied to the

nipples containing a plastic liner.

IMPORTANT

FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED TEMPERATURE-

PRESSURE RELIEF VALVE WILL RELEASE THE MANUFACTURER

FROM ANY CLAIM, WHICH MIGHT RESULT FROM EXCESSIVE

TEMPERATURE AND PRESSURES.

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Water Connections continued-

WARNING

For protection against excessive temperatures and pressure, install

temperature and pressure protective equipment required by local codes, but

not less than a combination temperature and pressure relief valve certified by

a nationally recognized testing laboratory that maintains periodic inspection

of production of listed equipment or materials, as meeting the Requirements

for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply

Systems, ANSI Z21.22, and the Standard CAN1-4.4 Temperature, Pressure,

Temperature and Pressure Relief Valves and Vacuum Relief Valves. The

combination temperature and pressure relief valve must be marked with a

maximum set pressure, not to exceed the maximum working pressure of the

water heater. The combination temperature and pressure relief valve shall

also have an hourly rated temperature steam BTU discharge capacity not

less than the hourly input rating of the water heater.

Install the combination temperature and pressure relief valve into the opening

provided and marked for this purpose on the water heater

Note: Some models may already be equipped or supplied with a

combination temperature and pressure relief valve. Verify that the

combination temperature and pressure relief valve complies with local codes.

If the combination temperature and pressure relief valve does not comply

with local codes, replace it with one that does. Follow the installation

instructions above on this page.

Install a discharge line so that water discharged from the combination

temperature and pressure relief valve will exit within six (6) inches (15.3 cm)

above, or any distance below the structural floor and cannot contact any live

electrical part. The discharge line is to be installed to allow for complete

drainage of both the temperature and pressure relief valve and the discharge

line. The discharge opening must not be subjected to blockage or freezing.

DO NOT thread, plug or cap the discharge line. It is recommended that a

minimum of four (4) inches (10.2 cm) be provided on the side of the water

heater for servicing and maintenance of the combination temperature and

pressure relief valve.

Do not place a valve between the combination temperature and pressure

relief valve and the tank.

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Water Connections continued-

WARNING

Hydrogen gas can be produced in a hot water system served by this

water heater that has not been used for a long period of time

(generally two weeks or more). Hydrogen gas is extremely

flammable. To reduce the risk of injury under these conditions, it is

recommended that the hot water faucet be opened for several

minutes at the kitchen sink before using any electrical appliance

connected to the hot water system. If hydrogen is present, there will

probably be an unusual sound such as air escaping through the pipe

as the water begins to flow. There should be no smoking or open

flame near the faucet at the time it is open.

CAUTION

INCREASING THE THERMOSTAT SETTING ABOVE THE PRESET

TEMPERATURE MAY CAUSE SEVERE BURNS AND CONSUME

EXCESSIVE ENERGY. HOTTER WATER INCREASES THE RISK OF

SCALD INJURY.

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This water heater can deliver scalding temperature water at any faucet in the

system. Be careful whenever using hot water to avoid scalding injury. Certain

appliances, such as dishwashers and automatic clothes washers, may require

increased temperature water. By setting the thermostat on this water heater

to obtain increased temperature water required by these appliances, you might

create the potential for scald injury. To protect against injury, you should

install an ASSE approved mixing valve in the water system. This valve will

reduce point of discharge temperature by mixing cold and hot water in branch

supply lines. Such valves are available from the manufacturer of this water

heater or a local plumbing supplier. Please consult with a plumbing

professional.

Water Connections continued-

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Figure 1

(Dual Temperature System With Mixing Valve)

Figure 2

(Single Installation With Storage Tank Gravity Circulation)

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Water Connections continued-

Figure 3

(Dual Water Heater Installation)

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Electrical Connections

Before any electrical connections are made, be sure that the water heater is

full of water and that the manual shut-off valve in the cold water supply line is

open. If the heating elements are not completely immersed in water at all

times, they will be damaged (burned-out) if energized for even a short period of

time. The warranty does not cover burned-out heating elements. Check the

rating plate and wiring diagram before proceeding. This electric water heater

was built and wired in accordance with the Underwriters Laboratories testing

approvals requirements. The temperature-limiting device is of the manual

reset, trip-free type and has been factory installed to interrupt all ungrounded

power supply conductors in the event of thermostat failure. The plumbing

supplier in your area ordered this water heater wired at the factory to comply

with existing area codes, but local utility codes may require or allow other

circuitry. Consult your local power company to determine the correct electrical

hook-up in order to meet local utility and building codes and in order to obtain

the most economical rates. All electrical connections to elements,

thermostats, and contactors (certain models) have been made at the factory.

DO NOT alter any of the internal wiring. Wiring connections may loosen

during shipment. Check all connections for tightness.

To make the wiring connections to a power supply, follow the steps below.

A) Open cover door of the control box.

B) Bring the power leads from an adequately fused disconnect switch (not

furnished with the water heater due to varying state and local codes) and

connect to the terminal block. Where long runs, local ordinances or utility

company necessitates, an increase in size may be required.

C) This water heater must be properly grounded. A ground lug is provided

within the electrical control box for connection to a properly sized

ground. (See wiring diagram for minimum required ground size. Wiring

diagram is located on the inside door of the control box)

D) Close cover door of the control box.

Heating Elements

To replace heating elements, disconnect power to the water heater, drain tank

and replace element. To remove a heating element, use a 1 1/2” screw type

element wrench available from most supply houses. Do not over-tighten the

new element, as this will cause distortion in the new element gasket. Once

the element has been replaced, follow the instructions “To Fill The Water

Heater”. It is imperative that the water heater is full before power is restored to

the heating elements.

Electrical Connections continued-

Amperage Chart

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kW 208V 240V 277V 380V 415V 480V

Input 1Ø 3Ø 1Ø 3Ø 1Ø 3Ø 3Ø 1Ø 3Ø

6 29 17 25 14 22 9 8 12 7

9 43 25 38 22 32 14 13 19 11

12 58 33 50 29 43 19 17 25 14

13.5 65 38 56 32 49 21 19 28 16

15 72 42 63 36 54 23 21 31 18

18 87 50 75 43 65 28 25 38 22

24 115 67 100 58 87 37 34 50 29

27 130 75 113 65 97 41 38 56 32

30 144 83 125 72 108 46 42 63 36

36 173 100 150 87 130 55 50 75 43

45 216 125 188 108 162 69 63 94 54

54 260 150 225 130 195 83 75 113 65

Water heaters with amperage draw of 48 AMPS or more require factory installed

internal fusing to comply with Underwriters Laboratories requirements.

GPH Recovery Capacities

kW Temperature Rise

Input

40°F 50°F 60°F 70°F 80°F 90°F 100°F 120°F 140°F

6 62 50 41 35 31 28 25 21 18

9 93 74 62 53 47 41 37 31 27

12 124 99 83 71 62 55 50 41 35

13.5 140 112 93 80 70 62 56 47 40

15 155 125 103 89 78 69 62 52 44

18 186 149 124 106 93 83 74 62 53

24 248 199 164 142 124 110 99 83 71

27 279 223 186 160 140 124 112 93 80

30 310 248 207 177 155 138 124 103 89

36 372 298 248 213 186 165 149 124 106

45 465 372 310 266 233 207 186 155 133

54 558 447 372 319 279 248 223 186 160

Multiply kW input by 3,412 to determine BTU input:

Example: 54kW x 3412 = 184,248 BTU’s

Recovery Computation Formula

GPH= (watts x 3.412) / (8.25 x °Temp. Rise)

GENERAL OPERATION

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Before closing the switch to allow electric current to flow to the water heater,

make certain that the water heater is full of water and that the cold water inlet

valve is open. Complete failure of the heating elements will result if they are

not totally immersed in water at all times. When the switch is closed, the

operation of this electric water heater is automatic. Surface mounted

thermostats are preset to the “HOT” setting to provide a water temperature of

approximately 120°F (49°C) to reduce the risk of scald injury. For water

heaters with immersion type thermostats, the temperature control knob

located on the side on the control box is factory preset to 120°F (49°C). Care

must be taken whenever using hot water to avoid scalding injury. Certain

appliances require high temperature hot water (such as dishwashers and

automatic clothes washers).

TO FILL THE WATER HEATER

1. Close the water heater drain valve by turning the knob clockwise.

2. Open the cold water supply shut-off valve.

3. Open several hot water faucets to allow air to escape from the system.

4. When a steady stream of water flows from the faucets, the water heater is

filled. Close the faucets and check for water leaks at the water heater drain

valve, combination temperature and pressure relief valve and the hot and

cold water connections.

5. Reconnect power supply to water heater.

TO DRAIN THE HEATER

Should it become necessary to completely drain the water heater, make sure

you follow the steps below:

1. Disconnect the power supply to the heater. Consult the plumbing

professional or electric company in your area for service.

2. Close the cold water supply shut-off valve.

3. Open the drain valve on the water heater by turning the knob counter-

clockwise. The drain valve has threads on the end that will allow

connection of a standard hose coupling.

4. Open a hot water faucet to allow air to enter the system.

To refill the water heater, refer to “TO FILL THE WATER HEATER.”

Thermostat Adjustment

There are two types of thermostats this electric water heater may come

equipped with from the factory. One type, surface mounted thermostats,

CAUTION

Scalding may occur within five (5) seconds at a temperature setting of

135°F (57°C).

INTERNET VERSION FOR REFERENCE ONLY

directly contacts the water heater tank surface (see Figure 4). The second

type, immersed type are immersed within the water heater tank and uses

contactor type relays. Before any work is done on the water heater,

disconnect all power to the water heater by opening the switch at the main

electrical circuit breaker or fuse box. Before adjusting or setting surface

mounted type thermostat(s), disconnect all power to the water heater.

To gain access to the surface mounted thermostat(s), remove the outer

access panel and fiberglass insulation. Using a screwdriver rotate the

thermostat dial on each thermostat clockwise to increase the water

temperature. After adjusting the surface mounted thermostats, replace the

fiberglass insulation making sure that the controls are well covered and that

the plastic terminal shield has not been displaced; replace the access panel.

Once the water heater has been filled with water, electrical power may be

restored to the water heater and the water heater is ready for operation. To

adjust or set the water temperature for water heaters using immersed type

thermostat(s), locate the temperature control dial on the right side of the lower

control box. To increase the water temperature, rotate the temperature control

dial clockwise (see Figure 5). The thermostat(s) or temperature control dial

has been factory preset to approximately 120°F (49°C).

Thermostat Adjustment continued-

DANGER

Hotter water increases the risk of scald injury. Scalding may occur within five

(5) seconds at a temperature setting of 135°F (57°C). To protect against hot

water injury, install an ASSE approved mixing valve in the water system. This

valve will reduce point of discharge water temperatures by mixing cold and hot

water in branch water lines. A licensed plumbing professional or local

plumbing authority should be consulted.

Note: This water heater is equipped with an energy cut out device to prevent

overheating. Should overheating occur, turn off the electrical supply to the

water heater and contact a qualified service technician.

INTERNET VERSION FOR REFERENCE ONLY

Figure 4

Figure 5

MAINTENANCE

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Shut off the electric power whenever the water supply to the water heater is off.

Shut off the electric power and water supply, drain the heater completely to

prevent freezing whenever the building is left unoccupied during the cold

weather months. In order to insure efficient operation and long tank life, drain

the water heater at least once a month through the drain valve until the water

runs clear. Failure to do this may result in noisy operation and lime and

sediment buildup in the bottom of the tank. Check the temperature-pressure

relief valve to insure that the valve has not become encrusted with lime. Lift the

lever at the top of the valve several times until the valve seats properly without

leaking and operates freely.

The following, maintenance should be performed by a qualified service

technician at the minimum periodic intervals suggested below. In some

installations, the maintenance interval may be more frequent depending on the

amount of use and the operating conditions of the water heater. Regular

inspection and maintenance of the water heater will help to insure safe and

reliable operation.

1. Annually, check the operation of the thermostat(s).

2. Bi-annually, check the seal around the heating elements for leaks. If there

is any sign of leaking, disconnect the power supply to the water heater and

contact the plumbing professional that installed this water heater or a

qualified service technician.

Maintenance continued-

IMPORTANT

The water heater should be inspected at a minimum of annually by a

qualified service technician for damaged components. DO NOT operate this

water heater if any part is found damaged.

WARNING

When lifting lever of temperature-pressure relief valve, hot water will be

released under pressure. Be certain that any released water does not

result in bodily injury or property damage. The magnesium anode rod

should be inspected periodically and replaced when necessary to prolong

tank life.

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3. At least once a year, check the combination temperature and pressure relief

valve to insure that the valve has not become encrusted with lime. Lift the

lever at the top of the temperature-pressure relief valve several times until

the valve seats properly without leaking and operates freely.

4. If the combination temperature and pressure relief valve on the appliance

discharges periodically, this may be due to thermal expansion in a closed

water supply system. Contact the water supplier or local plumbing

inspector on how to correct this situation. Do not plug the combination

temperature and pressure relief valve outlet for any reason.

5. Monthly, drain off a gallon of water from the water heater to remove silt and

sediment.

6. A combination sacrificial anode rod/hot water outlet nipple has been

installed to extend tank life. The anode rod should be inspected

periodically (every 2 years) and replaced when necessary to prolong tank

life. Water conditions in your area will influence the time interval for

inspection and replacement of the anode rod. Contact the plumbing

professional who installed the water heater or the manufacturer listed on the

rating plate for anode replacement information. The use of a water softener

may increase the speed of anode consumption. More frequent inspection of

the anode is needed when using softened (or phosphate treated) water.

7. If this water heater is equipped with fuses, before removing any fuse,

disconnect the all power to the water heater. Open the upper control box

door and replace fuses according to the size indicated on the wiring

diagram affixed to the inside of the door.

Maintenance continued-

Contact your local plumbing supplier or plumbing professional for replacement

parts or contact the company at the address displayed on the rating plate of

the water heater.

WARNING

When lifting lever of temperature-pressure relief valve, hot water will be

released under pressure. Be certain that any released water does not result

in bodily injury or property damage.

WARNING!: THIS WATER MAY BE HOT.

CAUTION

FOR YOUR SAFETY, DO NOT ATTEMPT TO REPAIR THERMOSTAT(S),

HEATING ELEMENTS, OR ELECTRICAL WIRING. REFER SUCH REPAIRS

TO A QUALIFIED SERVICE TECHNICIAN.

INTERNET VERSION FOR REFERENCE ONLY

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Bradford White 238-16152-00F User manual

Brand: Bradford White

Model: 238-16152-00F

Category: Water heaters & boilers

Type: User manual

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Bradford White 238-16152-00F User manual

Bradford White 238-16152-00F User manual

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